Physics Bucharest 2017

Consider systematic errors only  M PTV,sys

= 2.5Σ

How to choose M PTV ,sys

for planning ?

van Herk et al (2000): allow a probability of 10% that CTV sticks (partially) outside the PTV  probability of 10% that part of the CTV gets dose < 95%

M PTV,sys

x

PTV

CTV

y

planning isoc